Master Chemistry with Fun Quizzes & Brain Teasers!

What happens to a person's weight on smaller and larger planets?
1 Answer
Lions and cheetahs live in the same area and both eat they same type of prey. Which type of competition occurs between a lion and a cheetah?intraspecificpredator-preyinterspecificmutualism
1 Answer
What are some applications of flame tests in industry? Describe at least three, one of them MUST includefirework industry.
1 Answer
What is the percent composition of sulfur in H2SO4?2.1%B)65.2%C)98.1%D)32.7%
2 Answers
which two options are examples of chemical changes?A. A shinny metal bar glows red and expands when heated. B. white piece of paper turns black and gives off a smell when burned C. When two clear colorless liquids are mixed together, a white solid forms D. A white powder mixed with a clear, colorless liquid makes a solution that is also clear, colorless liquid
1 Answer
A student uses red litmus paper to test the pH value of different solutions. Which would result in a color change of the litmus paper?soapvinegarlemon juiceantifreeze
2 Answers
what is the point of doing an experiment. Help thank you
2 Answers
Which word names melted rock and minerals found beneath Earth's crust?A.lavaB.magmaC.rhyoliteD.gabbro
2 Answers
Which describes a homogeneous mixture?A solvent dissolves in a solute to make a solution.A solute dissolves in a solvent to make a solution.A solution dissolves in a solute to make a solvent.A solution dissolves in a solvent to make a solute.
2 Answers
What does the statement there is only about 13.7 billion in space
1 Answer
Which of the following did you include?The atoms in each ion are bonded together covalently to form a single unit.The charge is distributed over the entire ion.The formula of ammonium fluoride is NH4F.The formula of potassium sulfate is K2SO
1 Answer
How is compound XY different from elements X and Y?
1 Answer
Compare ionic, covalent, and metallic bonds based on each's strength
1 Answer
Can someone please explain how to solve it ?
1 Answer
84. Predict how many electrons each element will most likelygain or lose.(a) I(b) Ba(c) Cs(d) Se
1 Answer
PLEASE HELPI'll give brainliest if you can solve and explain how you got it.
2 Answers
PLEASE HELP! THIS IS DUE IN 10 MINUTES! (15 POINTS)What did Democritus, Dalton Thompson, Rutherford and Bohr have in common?A. They each identified new elementsB. They each identified new isotopes of atomsC. They each contributed to the development of the atomic theoryD. They each contributed experiments in which particles collided.
1 Answer
Explain why chemical equations have to be balanced.
2 Answers
if u trust urself do itStudy these images.4 photos of clouds. 1: Sky covered with large, flat layers of blue, grey clouds. 2: A tall, fluffy cloud shaped like an anvil. 3: Round, puffy clouds in a blue sky. 4: Thin, wispy clouds high in the sky.Which image shows a cumulonimbus cloud?123
2 Answers
Which is NOT part of the definition of matter
1 Answer
Find the midpoint of points A(-10,3) and B(-7,-4) graphically .
1 Answer
please help :(.......
2 Answers
PLEASE ANSWER!! All of the ecosystems on Earth make up the _________. A. biosphere B. atmosphere C. lithosphere D. Thermosphere
2 Answers
help plsWhich process of sedimentary rock formation occurs last?cementationcompactiondepositionerosion
2 Answers